<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // 1.字面量创建
        var obj1 = {

        }
        // 2.new object创建
        var obj2 = new Object()

        // 3.自定义构造函数创建
        function Star(uname, age) {
            this.uname = uname
            this.age = age
            this.sing = function () {
                console.log('唱歌');
            }

        }
        var ldh = new Star('刘德华', 18)
        var zxy = new Star('张学友', 20)
        ldh.sing()
        zxy.sing()

    </script>
</body>

</html>